METASTATIC CARCINOMA TO THE SKIN€¦ · METASTATIC CARCINOMA • Skin metastasis is defined as the...
105
METASTATIC CARCINOMA TO THE SKIN MICHAEL A NOWAK, MD
Transcript of METASTATIC CARCINOMA TO THE SKIN€¦ · METASTATIC CARCINOMA • Skin metastasis is defined as the...
METASTATIC
CARCINOMA
TO THE SKIN
MICHAEL A NOWAK MD
CONFLICTS
bull No conflicts with the content of this lecture
METASTATIC CARCINOMA
bull Relatively uncommon in comparison to primary
cutaneous carcinomas
bull Requires high clinical suspicion
bull Gender differences
bull Clinical differential diagnosis
bull Histologic differential diagnosis
METASTATIC CARCINOMA
bull Skin metastasis is defined as the spread of malignant
cells from a primary malignancy to the skin
bull Originate either from an internal malignancy or from a
primary skin cancer (melanoma)
bull Skin metastases are encountered in 07-9 of all
patients with cancer
bull Skin is an uncommon site of metastatic disease when
compared to other organs
METASTATIC CARCINOMA
bull Long-time lag between the diagnosis of the primary
malignancy and the recognition of the skin metastases
bull Cutaneous metastasis may be the first indication of a
clinically silent visceral malignancy
bull Regional distribution of the skin metastasis is related to the
location of the primary malignancy and the mechanism of
metastatic spread
bull The relative frequency of skin metastasis does not always
correlate with the prevalence of the type of primary cancer
(ie prostate cancer)
METASTATIC CARCINOMA
bull Cutaneous metastasis as the first indication of a
internal malignancy
bull Lung
bull Ovary
bull Renal
METASTATIC CARCINOMA
Mechanism of Metastatic Spread
bull Lymphatic Dissemination
bull Local overlying skin (Breast Oral Cavity)
bull Hematogenous Dissemination
bull Local andor Distant (Breast Lung GI GU)
METASTATIC CARCINOMA
bull Lung carcinoma (24) is the most common skin
metastasis in men (followed by large intestine 19
melanoma 13 oral cavity 12)
bull Breast carcinoma (69) is the most common skin
metastasis in women (followed by large intestine 9)
bull The anterior chest and neck region are the areas of
greatest predilection in men
bull The anterior chest wall and the abdomen are the most
commonly involved sites in women
Men Women
lt 40 yr gt 40 yr lt 40 yr gt 40 yr
Melanoma
Colon cancer
Lung cancer
Lung cancer
Colon cancer
SCC in the oral cavity
Melanoma
Breast cancer
Colon cancer
Ovarian cancer
Breast cancer
Colon cancer
Lung cancer
Ovarian cancer
Melanoma
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
CONFLICTS
bull No conflicts with the content of this lecture
METASTATIC CARCINOMA
bull Relatively uncommon in comparison to primary
cutaneous carcinomas
bull Requires high clinical suspicion
bull Gender differences
bull Clinical differential diagnosis
bull Histologic differential diagnosis
METASTATIC CARCINOMA
bull Skin metastasis is defined as the spread of malignant
cells from a primary malignancy to the skin
bull Originate either from an internal malignancy or from a
primary skin cancer (melanoma)
bull Skin metastases are encountered in 07-9 of all
patients with cancer
bull Skin is an uncommon site of metastatic disease when
compared to other organs
METASTATIC CARCINOMA
bull Long-time lag between the diagnosis of the primary
malignancy and the recognition of the skin metastases
bull Cutaneous metastasis may be the first indication of a
clinically silent visceral malignancy
bull Regional distribution of the skin metastasis is related to the
location of the primary malignancy and the mechanism of
metastatic spread
bull The relative frequency of skin metastasis does not always
correlate with the prevalence of the type of primary cancer
(ie prostate cancer)
METASTATIC CARCINOMA
bull Cutaneous metastasis as the first indication of a
internal malignancy
bull Lung
bull Ovary
bull Renal
METASTATIC CARCINOMA
Mechanism of Metastatic Spread
bull Lymphatic Dissemination
bull Local overlying skin (Breast Oral Cavity)
bull Hematogenous Dissemination
bull Local andor Distant (Breast Lung GI GU)
METASTATIC CARCINOMA
bull Lung carcinoma (24) is the most common skin
metastasis in men (followed by large intestine 19
melanoma 13 oral cavity 12)
bull Breast carcinoma (69) is the most common skin
metastasis in women (followed by large intestine 9)
bull The anterior chest and neck region are the areas of
greatest predilection in men
bull The anterior chest wall and the abdomen are the most
commonly involved sites in women
Men Women
lt 40 yr gt 40 yr lt 40 yr gt 40 yr
Melanoma
Colon cancer
Lung cancer
Lung cancer
Colon cancer
SCC in the oral cavity
Melanoma
Breast cancer
Colon cancer
Ovarian cancer
Breast cancer
Colon cancer
Lung cancer
Ovarian cancer
Melanoma
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
bull Relatively uncommon in comparison to primary
cutaneous carcinomas
bull Requires high clinical suspicion
bull Gender differences
bull Clinical differential diagnosis
bull Histologic differential diagnosis
METASTATIC CARCINOMA
bull Skin metastasis is defined as the spread of malignant
cells from a primary malignancy to the skin
bull Originate either from an internal malignancy or from a
primary skin cancer (melanoma)
bull Skin metastases are encountered in 07-9 of all
patients with cancer
bull Skin is an uncommon site of metastatic disease when
compared to other organs
METASTATIC CARCINOMA
bull Long-time lag between the diagnosis of the primary
malignancy and the recognition of the skin metastases
bull Cutaneous metastasis may be the first indication of a
clinically silent visceral malignancy
bull Regional distribution of the skin metastasis is related to the
location of the primary malignancy and the mechanism of
metastatic spread
bull The relative frequency of skin metastasis does not always
correlate with the prevalence of the type of primary cancer
(ie prostate cancer)
METASTATIC CARCINOMA
bull Cutaneous metastasis as the first indication of a
internal malignancy
bull Lung
bull Ovary
bull Renal
METASTATIC CARCINOMA
Mechanism of Metastatic Spread
bull Lymphatic Dissemination
bull Local overlying skin (Breast Oral Cavity)
bull Hematogenous Dissemination
bull Local andor Distant (Breast Lung GI GU)
METASTATIC CARCINOMA
bull Lung carcinoma (24) is the most common skin
metastasis in men (followed by large intestine 19
melanoma 13 oral cavity 12)
bull Breast carcinoma (69) is the most common skin
metastasis in women (followed by large intestine 9)
bull The anterior chest and neck region are the areas of
greatest predilection in men
bull The anterior chest wall and the abdomen are the most
commonly involved sites in women
Men Women
lt 40 yr gt 40 yr lt 40 yr gt 40 yr
Melanoma
Colon cancer
Lung cancer
Lung cancer
Colon cancer
SCC in the oral cavity
Melanoma
Breast cancer
Colon cancer
Ovarian cancer
Breast cancer
Colon cancer
Lung cancer
Ovarian cancer
Melanoma
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
bull Skin metastasis is defined as the spread of malignant
cells from a primary malignancy to the skin
bull Originate either from an internal malignancy or from a
primary skin cancer (melanoma)
bull Skin metastases are encountered in 07-9 of all
patients with cancer
bull Skin is an uncommon site of metastatic disease when
compared to other organs
METASTATIC CARCINOMA
bull Long-time lag between the diagnosis of the primary
malignancy and the recognition of the skin metastases
bull Cutaneous metastasis may be the first indication of a
clinically silent visceral malignancy
bull Regional distribution of the skin metastasis is related to the
location of the primary malignancy and the mechanism of
metastatic spread
bull The relative frequency of skin metastasis does not always
correlate with the prevalence of the type of primary cancer
(ie prostate cancer)
METASTATIC CARCINOMA
bull Cutaneous metastasis as the first indication of a
internal malignancy
bull Lung
bull Ovary
bull Renal
METASTATIC CARCINOMA
Mechanism of Metastatic Spread
bull Lymphatic Dissemination
bull Local overlying skin (Breast Oral Cavity)
bull Hematogenous Dissemination
bull Local andor Distant (Breast Lung GI GU)
METASTATIC CARCINOMA
bull Lung carcinoma (24) is the most common skin
metastasis in men (followed by large intestine 19
melanoma 13 oral cavity 12)
bull Breast carcinoma (69) is the most common skin
metastasis in women (followed by large intestine 9)
bull The anterior chest and neck region are the areas of
greatest predilection in men
bull The anterior chest wall and the abdomen are the most
commonly involved sites in women
Men Women
lt 40 yr gt 40 yr lt 40 yr gt 40 yr
Melanoma
Colon cancer
Lung cancer
Lung cancer
Colon cancer
SCC in the oral cavity
Melanoma
Breast cancer
Colon cancer
Ovarian cancer
Breast cancer
Colon cancer
Lung cancer
Ovarian cancer
Melanoma
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
bull Long-time lag between the diagnosis of the primary
malignancy and the recognition of the skin metastases
bull Cutaneous metastasis may be the first indication of a
clinically silent visceral malignancy
bull Regional distribution of the skin metastasis is related to the
location of the primary malignancy and the mechanism of
metastatic spread
bull The relative frequency of skin metastasis does not always
correlate with the prevalence of the type of primary cancer
(ie prostate cancer)
METASTATIC CARCINOMA
bull Cutaneous metastasis as the first indication of a
internal malignancy
bull Lung
bull Ovary
bull Renal
METASTATIC CARCINOMA
Mechanism of Metastatic Spread
bull Lymphatic Dissemination
bull Local overlying skin (Breast Oral Cavity)
bull Hematogenous Dissemination
bull Local andor Distant (Breast Lung GI GU)
METASTATIC CARCINOMA
bull Lung carcinoma (24) is the most common skin
metastasis in men (followed by large intestine 19
melanoma 13 oral cavity 12)
bull Breast carcinoma (69) is the most common skin
metastasis in women (followed by large intestine 9)
bull The anterior chest and neck region are the areas of
greatest predilection in men
bull The anterior chest wall and the abdomen are the most
commonly involved sites in women
Men Women
lt 40 yr gt 40 yr lt 40 yr gt 40 yr
Melanoma
Colon cancer
Lung cancer
Lung cancer
Colon cancer
SCC in the oral cavity
Melanoma
Breast cancer
Colon cancer
Ovarian cancer
Breast cancer
Colon cancer
Lung cancer
Ovarian cancer
Melanoma
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
bull Cutaneous metastasis as the first indication of a
internal malignancy
bull Lung
bull Ovary
bull Renal
METASTATIC CARCINOMA
Mechanism of Metastatic Spread
bull Lymphatic Dissemination
bull Local overlying skin (Breast Oral Cavity)
bull Hematogenous Dissemination
bull Local andor Distant (Breast Lung GI GU)
METASTATIC CARCINOMA
bull Lung carcinoma (24) is the most common skin
metastasis in men (followed by large intestine 19
melanoma 13 oral cavity 12)
bull Breast carcinoma (69) is the most common skin
metastasis in women (followed by large intestine 9)
bull The anterior chest and neck region are the areas of
greatest predilection in men
bull The anterior chest wall and the abdomen are the most
commonly involved sites in women
Men Women
lt 40 yr gt 40 yr lt 40 yr gt 40 yr
Melanoma
Colon cancer
Lung cancer
Lung cancer
Colon cancer
SCC in the oral cavity
Melanoma
Breast cancer
Colon cancer
Ovarian cancer
Breast cancer
Colon cancer
Lung cancer
Ovarian cancer
Melanoma
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
Mechanism of Metastatic Spread
bull Lymphatic Dissemination
bull Local overlying skin (Breast Oral Cavity)
bull Hematogenous Dissemination
bull Local andor Distant (Breast Lung GI GU)
METASTATIC CARCINOMA
bull Lung carcinoma (24) is the most common skin
metastasis in men (followed by large intestine 19
melanoma 13 oral cavity 12)
bull Breast carcinoma (69) is the most common skin
metastasis in women (followed by large intestine 9)
bull The anterior chest and neck region are the areas of
greatest predilection in men
bull The anterior chest wall and the abdomen are the most
commonly involved sites in women
Men Women
lt 40 yr gt 40 yr lt 40 yr gt 40 yr
Melanoma
Colon cancer
Lung cancer
Lung cancer
Colon cancer
SCC in the oral cavity
Melanoma
Breast cancer
Colon cancer
Ovarian cancer
Breast cancer
Colon cancer
Lung cancer
Ovarian cancer
Melanoma
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
bull Lung carcinoma (24) is the most common skin
metastasis in men (followed by large intestine 19
melanoma 13 oral cavity 12)
bull Breast carcinoma (69) is the most common skin
metastasis in women (followed by large intestine 9)
bull The anterior chest and neck region are the areas of
greatest predilection in men
bull The anterior chest wall and the abdomen are the most
commonly involved sites in women
Men Women
lt 40 yr gt 40 yr lt 40 yr gt 40 yr
Melanoma
Colon cancer
Lung cancer
Lung cancer
Colon cancer
SCC in the oral cavity
Melanoma
Breast cancer
Colon cancer
Ovarian cancer
Breast cancer
Colon cancer
Lung cancer
Ovarian cancer
Melanoma
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
Men Women
lt 40 yr gt 40 yr lt 40 yr gt 40 yr
Melanoma
Colon cancer
Lung cancer
Lung cancer
Colon cancer
SCC in the oral cavity
Melanoma
Breast cancer
Colon cancer
Ovarian cancer
Breast cancer
Colon cancer
Lung cancer
Ovarian cancer
Melanoma
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
bull Histologically skin metastases usually show
features reminiscent of the primary malignancy
bull Poorly differentiated - Carcinoma of Unknown
Primary (CUP) - remember melanoma
bull Metastasis to the skin is often a pre-terminal
event that heralds poor outcome
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
bull Benign vs Malignant
bull Primary skin cancer vs Adnexal
bull Primary skin cancer vs Metastatic
bull Adnexal carcinoma vs Metastatic
bull Epidermal involvement depththickness dermis
resemble BCCSCC glandular differentiation
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
Benign vs Malignant
bull Size Symmetry Circumscription
DepthThickness
bull Atypia Mitoses Differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
Primary Skin Cancer vs Adnexal Tumor
bull Adnexal tumors (Benign and Malignant) usually
lack epidermal continuity involve the deep
dermis look different from a BCCSCC
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
Primary Skin Cancer vs Metastatic
bull Metastatic carcinomas usually lack epidermal
continuity involve deep dermis look different
from a BCCSCC (exception metastatic SCC)
frequently display glandular differentiation
bull Special stains - identify differentiation
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
Adnexal Tumor vs Metastatic
bull Adnexal tumors (benign and malignant) and metastatic tumors
usually lack epidermal continuity involve deep dermis look
different from a BCCSCC frequently display glandular
differentiation
bull Benign adnexal tumors lack significant cytological atypia and show
text book architectural features
bull Malignant adnexal tumors show cytological atypia and can have
familiar architectural features andor a remnant benign component
bull Special stains - identify differentiation - P63 is key
bull Remember melanoma markers
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
J Cutan Pathol 2007 Jun34(6)474-80
Use of p63 expression in distinguishing primary and metastatic
cutaneous adnexal neoplasms from metastatic adenocarcinoma
to skinIvan D Nash JW Prieto VG Calonje E Lyle S Diwan AH Lazar AJ
Department of Pathology University of Texas - MD Anderson Cancer Center
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMA
Clinical Presentation
bull Skin metastases usually appear as non-specific groups of
discrete firm painless nodules that emerge rapidly without
any explanation
bull They vary in size from so tiny as to be of miliary lesions to
as large as goose egg size
bull Some skin metastasis may mimic specific dermatological
conditions such as cutaneous cyst lipoma
dermatofibroma pyogenic granuloma hemangioma
papular eruptions herpes zoster eruptions morpheaform
plaques alopecia cellulitis and erysipelas
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMACarcinoma of the Breast
bull Inflammatory Metastatic Breast Carcinoma
bull En Cuirasse Metastatic Breast Carcinoma
bull Telangiectatatic Metastatic Breast Carcinoma
bull Nodular Metastatic Breast Carcinoma
bull Alopecia Neoplastica
bull Metastatic Breast Carcinoma of the Eyelid
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMACarcinoma of the Breast
bull Lymphatic dissemination
bull Inflammatory En Cuirasse Telangiectatatic
Nodular including Inframammary Crease
bull Hematogenous dissemination
bull Alopecia Neoplastica and Metastatic Breast
Carcinoma of the Eyelid
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Erythematous patch or plaque with spreading
border involving the breast and adjacent skin
bull Peau drsquoorange
bull Erysipelas-like - aka Carcinoma Erysipeloides
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAInflammatory Metastatic Breast Carcinoma
bull Clusters of tumor cells involving superficial and
deep lymphatics (retrograde lymphatic spread
into the skin secondary to blockage of deep
lymphatics)
bull Capillary congestion (clinical erythemawarmth)
bull Minimal inflammation
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull Cuirass = Armor vest
bull Diffuse induration involving skin of the breast
bull Morphea-like
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAEn Cuirasse Metastatic Breast Carcinoma
bull AKA Scirrhous Carcinoma
bull Extensive fibrosissclerosis resulting in a
rectangular punch biopsy
bull Inconspicuous fibroblast-like tumor cells - both
solitary and single rows ldquoIndian filingrdquo between
thickened collagen bundles
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Violaceous papulovesicles on skin of the breast
bull Sometimes Lymphangioma circumscriptum-like
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMATelangiectatatic Metastatic Breast Carcinoma
bull Tumor cells involving superficial lymphatics
bull Many prominent congested blood vessels
immediately below the epidermis results in the
clinical appearance of violaceous ldquovesiclesrdquo
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Multiple firm nodules with or without ulceration
bull Inframammary crease frequently in women with
large breasts
bull Solitary nodule can mimic primary cutaneous
skin cancer
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMANodular Metastatic Breast Carcinoma
bull Variably sized groups of tumor cells throughout
dermis without epidermal connection
bull Glandular differentiation
bull Occasionally pigmented
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAAlopecia Neoplastica
bull Oval plaques or patches of scalp with hair loss
bull Cicitricial Alopecia vs Alopecia Areata
bull Hematogenous
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAAlopecia Neoplastica
bull Resembles En Cuirasse (Scirrhous) Carcinoma
bull Extensive fibrosissclerosis with rectangular
silhouette and reduction of hair follicles
bull Single rows of ldquoIndian filingrdquo tumor cells between
thickened collagen bundles
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Painless swelling with induration or a discrete
solitary nodule
bull Chalazion vs sebaceous carcinoma
bull Hematogenous
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAMetastatic Breast Carcinoma of the Eyelid
bull Nodular with glandular differentiation lacks
epidermal connection
bull Prominent histiocytoid appearance can result in
misdiagnosis
bull Cytological atypia is present
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAImmunohistochemical Stains
bull Pan Cytokeratin + CK7 + CK20 usually negative
bull GCDFP-15 + EMA + CEA +
bull ERPR (positive or negative)
bull Her2-Neu (positive or negative) - test mets for Her2
ldquogainrdquo
bull GATA3 - very helpful in triple negative breast cancer
bull S100 HMB-45
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
Hum Pathol 2013 Jul44(7)1341-9
GATA3 expression in breast carcinoma utility in triple-
negative sarcomatoid and metastatic carcinomas
Cimino-Mathews A Subhawong AP Illei PB Sharma R Halushka MK Vang R Fetting JH Park BH Argani P
Department of Pathology The Johns Hopkins Hospital
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
Clin Breast Cancer 2009 June 9(Suppl 2) S50ndashS57
Treatment of HER2-Positive Metastatic Breast Cancer Following
Initial Progression
Ingrid A Mayer
Department of Medicine and Breast Cancer Research Program Vanderbilt University School of Medicine
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMACarcinoma of the Breast
bull Unusual histologic patterns
bull Signet ring cell pattern mimics primary signet ring
cell carcinoma (eyelid CK7+CK20 +)
bull Mucinous carcinoma pattern mimics primary
mucinous carcinoma (eyelid CK7+CK20-)
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMACarcinoma of the Lung
bull Most common metastatic carcinoma of the skin
in men
bull Most common cause of cancer death in women
bull Localized cluster of papules or nodules on chest
wall and back - occasionally solitary
bull Oat (small) cell - skin of the back
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma - neuroendocrine
bull Non-small cell carcinoma (Squamous cell
carcinoma and Adenocarcinoma)
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMACarcinoma of the Lung
bull Small cell carcinoma vs Merkel cell carcinoma
bull Clinical history
bull Multiple lesions
bull Epidermal involvement
bull Immunostains CEA CK20 TTF-1
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Colorectal carcinoma is the 2nd most common
type of primary carcinoma in men
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Abdomen and perineal area gt Head and neck
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Gastric carcinoma is uncommon
bull Cutaneous metastases usually occur after the
primary tumor has been recognized
bull Any site - Umbilical most common
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Histopathology shows glandular differentiation
bull Adenocarcinoma (abortive gland formation)
bull Mucinous carcinoma pattern (pools of mucin
Large intestine)
bull Signet ring cell pattern (single mucin-laden cells
Stomach)
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAGastrointestinal Carcinoma
bull Special stains
bull Mucicarmine Alcian Blue Toluidine Blue
bull CK20 positive CK7 negative
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMASister Mary Josephrsquos Nodule
bull Gastrointestinal - 52 colon gastric pancreatic
bull Genitourinary - 28 ovarian uterine
bull CUP - Carcinoma of Unknown Primary
bull Hernia endometriosis keloid omphalith
bull Painful Poor prognosis Peritoneal metastases
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAOral Cavity Carcinoma
bull Primary - side of tongue or floor of mouth
bull Lymphatic spread - face or neck
bull Multiple or solitary nodule(s) +- Ulceration
bull Virtually always Squamous cell carcinoma
bull Deep dermissubcutis sparing upper dermis
except ulcerated lesions - difficult to distinguish
from primary cutaneous SCC
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMARenal Cell Carcinoma
bull Head and neck most common
bull Solitary or few nodules - tan-red to violaceous
bull First sign or late lesion
bull Virtually always in men
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMARenal Cell Carcinoma
bull Clear cell adenocarcinoma
bull Vascular
bull Glycogen
bull CD10 positive
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAOvarian Carcinoma
bull Abdomen (umbilicus) vulva back
bull Surgical scars
bull Papillary Adenocarcinoma - Psammoma bodies
bull Mucinous carcinoma
bull CK7CK20-positve
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAMiscellaneous Carcinoma
bull Neuroendocrine carcinoma and carcinoid
bull Liver
bull Thyroid
bull Adrenal
bull Pancreatic
bull Prostate
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
METASTATIC CARCINOMAProstate Carcinoma
bull Skin Metastases - very uncommon
bull Inguinal thighs lower abdomen
bull Other sites (scalp) rare
bull PSA NKX31
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
Dermatology Online Journal 2018 24(10)
A novel case of NKX31-positive metastatic
cutaneous prostate cancer
Wong JK Minni JP Nowak MA
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
What would I see on a report
bull Carcinoma involving dermis compatible with
metastatic carcinoma
bull Vascularlymphatic involvement
bull Special stains - P63 etc
bull Prognostic studies ERPR Her-2-Neu
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
What do I do next
bull Very difficult phone call to patient
bull Referral to oncologist or back to existing
oncologist
bull Possible additional biopsy for prognostic markers
bull Palliative treatment including simple excision PDT
(Levulan) intralesional chemotherapy local
wound care etc
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
Summary
bull Lymphatic vs Hematogenous
bull Gender differences
bull Her2 for Breast Cancer
bull Merkel - Small cell lung cancer
bull Sister Mary Joseph - GI ovary pancreatic renal
bull Renal - glycogen in men ldquoSugarmanrdquo
bull Prostate - NKX31 PSA
Michael Nowakman2004comcastnet
Michael Nowakman2004comcastnet
